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natima [27]
3 years ago
7

At STP, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

Chemistry
1 answer:
alexdok [17]3 years ago
8 0

Answer:

Silver

Explanation:

because it is a trasition metal and are good condutors

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Why glucose and fructose produce same shaped products with phenylhydrazine?
NemiM [27]

During the reaction of glucose and fructose with excess phenylhydrazine to form osazone, only the C-1andC-2 atoms of glucose and fructose participate in the reaction. The rest of the molecule remains intact. Hence, glucose and fructose produce the same osazone.

6 0
3 years ago
What enzyme catalyzes the conversion of carbon dioxide and water to carbonic acid, and where is this enzyme located
adoni [48]

Answer:

Carbonic anhydrase and they are located in renal tubules.

Explanation:

7 0
2 years ago
What is the molar mass of a gas which has a density of 0.00249 g/mL at 20.0 degrees celcius and 744.0 mm Hg?
creativ13 [48]

61.24 is the molar mass of a gas which has a density of 0.00249 g/mL at 20.0 degrees celcius and 744.0 mm Hg.

Explanation:

given that:

density = 0.00249 g/ml (\frac{mass}{volume})  or 2.49 grams/litre

P = 744 mm Hg OR 0.978 atm

T = 20 Degrees or 293.15 Kelvin

R = 0.08206 Litre atm/mole K

molar mass =?

Formula used/

PV = nRT    equation 1

here n is number of moles:

n = \frac{mass}{atomic mass}

putting the value of n and value of density in the equation 1:

PV = \frac{mass}{molar mass} x RT

molar mass = \frac{mass}{volume} x \frac{RT}{P}

                    = density x \frac{RT}{P}

                     = \frac{2.49 x 0.08276 x 293.15}{0.978}

                     = 61.24 is the molar mass of the gas.

8 0
3 years ago
Drag and drop each phrase below the type of weathering it describes.
iren2701 [21]

Answer:

Mechanical weathering

A. does not change rock composition

C. abrasion

F. ice wedging

Chemical weathering

B. oxidabon

D. changes rock composition

E. acid rain

Explanation:

5 0
3 years ago
Read 2 more answers
The energies of electrons are quantized. What does that mean?.
professor190 [17]

Answer:

The correct statement should be The energies of electron are <em>quantized</em> when <em>they are bounded to an atom.</em>

In Quantum Mechanics The term Quantization used to measure the physical entities having certain discrete value. When we say energies of electron are <em>quantized</em> <em>that means it have some specific values</em> that are allowed, that is not continuous range of values.

<em><u>Thanks for joining brainly community! </u></em>

4 0
2 years ago
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